JP4849838B2 - School security system - Google Patents

Description

  The present invention relates to a security system suitable for use in schools / business establishments equipped with an internal broadcasting system, and is particularly effective in preventing the spread of damage due to illegal intrusion by outsiders in schools. It is related to the security system of schools, etc. that can minimize damage by doing.

Recently, the number of cases of killing students and teachers due to the invasion of outsiders at schools has been increasing. By the way, as a prior art related to a security system for preventing this kind of damage, for example, when an abnormal situation is detected by a security sensor such as a gas detector, a fire detector, a security detector, etc., it is set in advance via a telephone line. There has been proposed a system for automatically reporting to a report destination. This automatic notification system has a private branch exchange connected to the telephone line, and changes the preset notification destination if the destination is busy during a call or does not respond even if it is called a predetermined number of times. And a controller that outputs abnormal information by a private broadcast speaker connected to the private branch exchange when all the callees are busy or do not respond even if they are called a predetermined number of times. (For example, refer to Patent Document 1).
JP-A-4-369799 (page 2 and FIG. 2)

  However, in the above automatic notification system, in general, about 5 to 10 notification destinations are registered and the redial function is also performed a plurality of times. It takes about 20 minutes. For this reason, for example, when an abnormal situation occurs in one classroom of a school, the contents of the abnormal situation cannot be confirmed in other classrooms or the faculty / staff room, which may lead to an increase in damage.

  The present invention has been made in view of the above points, and a plurality of teachers in the school can share and recognize in real time the contents of abnormal situations caused by illegal intrusion of outsiders into the school, thereby expanding damage. The object is to provide a security system that can be prevented to a minimum and that can be applied to offices and factories.

In order to achieve the above object, a security system according to the present invention is a security system used in a school or business office equipped with an internal broadcasting system, and is a wireless alarm that is permanently installed in a plurality of classrooms or departments. A transmitter, a wireless alarm receiver installed in a contact notification room such as a faculty / staff room, a security room, or an administrator room, and the alarm connected to the alarm receiver and receiving an emergency signal from the alarm transmitter It is equipped with an automatic notification device that sends a call to a pre-registered notification destination by a response signal from the receiving board via a telephone line, and notifies a message stored in advance when the notification destination arrives. An emergency push button that sends an emergency signal for a certain period of time is provided, and when the emergency push button is pressed, the standby state is switched to the reception state, and the alarm is received. When the emergency signal is received, it has a built-in transmission / reception function that switches to a call-ready state, and when the emergency signal is received from the alarm transmitter, the alarm receiving panel automatically transmits a response signal to the alarm transmitter Along with generating a warning for a certain time, specifying or displaying or notifying the alarm source (location) by the alarm transmitter, automatically connecting to the internal broadcasting system, and having a message stored in advance as a broadcast configuration, Further, when a call is started from the alarm transmitter, the call content is broadcast in preference to the message by the internal broadcasting system, and the call voice is also flowed to the alarm receiving board at the same time. To do.

  According to the security system of the present invention having the above-described configuration, the school can be used by connecting an alarm receiving board having an automatic notification function to a school broadcasting system that is 100% installed in the school. In addition, a plurality of alarm transmitters that notify the occurrence of an abnormal situation can be provided in each classroom or department, and since they are wireless, there are no restrictions on where they are installed. Therefore, in the event of an abnormal situation, a roomy teacher, student, or other person who can easily press the emergency push button, can immediately press it to notify the contact reporting room such as the faculty staff room or the security room. . Further, once the emergency push button is pressed, an emergency signal is transmitted to the alarm receiving panel, and the alarm transmitter is switched from the standby state to the reception state. On the other hand, when the alarm receiver receives an emergency signal, it automatically sends a response signal to the alarm transmitter whose emergency push button has been pressed, and identifies the source of the alarm, such as which classroom the alarm transmitter is in. Display, generate an alarm (sound or light), and connect to the internal broadcasting system to broadcast a pre-stored message. As a result, people in the school (premises) can recognize that an abnormal situation has occurred in a certain place (classroom or department), and can quickly and easily consider countermeasures. On the other hand, when the response signal is received, the automatic notification device transmits to the registered notification destination through the telephone line, the prerecorded message is sent to the called destination, and the alarm transmitter is switched from the reception state to the communication ready state. . As a result, it is possible to understand the contents of abnormal situations occurring inside the school even outside the school (external), and to investigate countermeasures, as well as to make calls between the alarm transmitter and the alarm reception board. Since the original state can be known also on the alarm receiving board side, it is possible to take countermeasures such as leaving students in other classrooms or waiting them.

In addition, when a call is started from the alarm transmitter, the call content is broadcast in preference to the message by the internal broadcasting system, and at the same time, the call voice is also sent to the alarm receiving board. Since calls to and from the alarm source are broadcast not only to the people around the reception board, but also to the entire school, people in the entire school can check the status of the alarm source. In addition, if the school broadcasting system is broken, the person who issued the alarm can confirm that the school broadcasting will not start, so even if the call answering switch on the alarm receiving panel is not pressed, You can make a unilateral call to (for example, a faculty member) and inform them of the situation at the site.

According to a second aspect of the present invention, the alarm receiving panel is provided with a call response button that enables a two-way call with the alarm transmitter. Internal broadcasting may be performed through a broadcasting system.

  If configured in this way, the contents of a two-way call between the alarm source and the place where the alarm reception board is placed can be broadcast to the entire school at the discretion of the person on the alarm reception board side. The entire people can confirm the detailed situation at the alarm source.

As described in claim 3 , a plurality of notification destinations by the automatic notification device are registered in priority order, and when the first priority notification destination is not received, the second priority notification destination is notified in priority order. Redials when the callee does not receive a call, but allows you to selectively set whether to stop the call if there is an incoming call from one of the callees, or continue until all the callees receive a call May be.

  If configured in this way, any number of report destinations can be registered arbitrarily, and therefore the report destination can be determined relatively easily.

As described in claim 4 , when an incoming call is received at the automatic report destination, the fact is displayed on the alarm transmitter and the alarm receiving panel, and when the emergency push button of the alarm transmitter is pressed at this time, the automatic A call with a report destination is enabled, and the content of the call is broadcast by the internal broadcasting system, and when a response button for the report destination of the alarm receiver is pressed, a call with the automatic report destination is enabled, This call content can be broadcast by the internal broadcasting system.

  If configured in this way, it is possible to have a conversation with the callee from both the alarm transmitter and the alarm receiver, and to exchange information other than pre-recorded messages. The system can broadcast all over the school or office.

According to claim 5 , a plurality of the alarm transmitters can be installed in each classroom or each department, and an emergency push of another alarm transmitter is possible in a state in which a call with one alarm transmitter is possible. When the button is pressed, the call receiving state between the alarm receiving board and the previous alarm transmitter is put on hold and a call can be made between the other alarm transmitters. It is possible to prevent the alarm from being received by the alarm receiving board.

  With this configuration, when the emergency push button of another alarm transmitter is pressed while each of the above functions for which the emergency push button was pressed in one alarm transmitter is operating, the emergency push button is pressed first. The call with the alarm transmitter is temporarily held and the call with the alarm transmitter whose next emergency push button is pressed becomes possible. For example, there are a plurality of illegal intruders and different locations (for example, a plurality of intruders). Even in the case of entering a classroom, it is possible to know the situation from each alarm source in sequence, making it easy to take countermeasures.

As described in claim 6 , the alarm transmitter is installed on the inner wall surface of the classroom or department, but may be made available in a state of being removed from the inner wall surface.

  If comprised in this way, the emergency push button of an alarm transmitter can be pushed so that it may not be noticed when a suspicious person etc. penetrate | invade.

As described in claim 7 , it is possible to detect the presence or absence of abnormality by automatically communicating periodically between the alarm transmitter and the alarm receiver, and even if a confirmation signal is transmitted from the alarm transmitter, When the response signal from the alarm receiving panel cannot be received, a warning light is displayed to indicate that the alarm receiving panel is abnormal. On the other hand, when the confirmation signal from the alarm transmitter cannot be received by the alarm receiving panel, the alarm transmitter is abnormal. It is preferable to display the fact together with the number of the alarm transmitter.

  With this configuration, it is possible to regularly confirm that both the alarm transmitter and the alarm receiving panel work normally when an abnormal situation occurs, and it is possible to always deal with peace of mind without worrying about malfunctions.

  In the security system of the present invention, people in the school can recognize in real time that an abnormal situation has occurred in a certain place, the contents of the abnormal situation caused by illegal intrusion of outsiders into the school, Countermeasures can be examined quickly and easily, and the expansion of damage can be prevented to a minimum. It can also be applied as a security system in offices and factories, and has the excellent effect that the equipment cost is low.

  Hereinafter, the best embodiment of the security system of the present invention will be described with reference to the drawings.

  FIG. 1 is an explanatory diagram showing devices on the alarm transmission side and alarm reception side used in the school security system according to the embodiment of the present invention. FIG. 2 is a block diagram showing a configuration of an embodiment of the alarm transmitter 2 used in the school security system of FIG. 1, and FIG. 3 is an embodiment of the alarm receiver 5 used in the school security system 1 of FIG. FIG.

  The school security system 1 in this example is suitable for use in facilities where a large number of students are distributed in multiple classrooms such as elementary schools and kindergartens and receive classes from faculty and staff. Is used.

  As shown in FIG. 1, the equipment required for the in-school security system 1 includes a wireless alarm transmitter 2 installed or deployed in each classroom, and an alarm notification destination such as a teacher room or a security room (this book In the example, it is composed of a wireless alarm receiving panel 5 installed in a faculty and staff room. The alarm transmitter 2 is usually installed by being attached to a wall surface in the classroom, but it can be removed from the wall surface and kept in a portable state.

  The alarm transmitter 2 is not limited to the shape as shown in FIG. 1, but in this example, it is disk-shaped and a circular emergency push button 21 is provided at the center of the lower part. Each microphone 23 is provided. A rod-shaped antenna 24 is projected upward from the center of the top. As shown in FIG. 2, the alarm transmitter 2 includes a control circuit unit 25 configured by a microcomputer. The control circuit unit 25 includes a modulation unit 26, an RF transmission unit 27, a demodulation unit 28, an RF The receiving unit 29 and the signal processing unit 30 are connected by a control signal line (dotted line display). Further, the antenna 24 is connected to the antenna sharing unit 24 ′, and from the antenna sharing unit 24 ′, one is connected in the order of the RF transmission unit 27 and the modulation unit 26, and the other is in the order of the RF reception unit 29 and the demodulation unit 28. The demodulation unit 28 and the modulation unit 26 are connected to the signal processing unit 30. Further, a speaker 22 and a microphone 23 are connected to the signal processing unit 30. In this example, a rechargeable battery 33 is used as an operating power source for each of the circuit units 26 to 30 including the control circuit unit 25 of the alarm transmitter 2, and power is supplied via the power source stabilization circuit unit 34. . The signal processing unit 30 includes a low-frequency amplifier that amplifies the audio signal and a mute circuit that removes noise.

  In the alarm transmitter 2, the operation switch 21 'of the emergency push button 21 and the control circuit unit 25 are connected by a control signal line. The control circuit unit 25 is connected to an RF transmission unit 27, a modulation unit 26, an RF reception unit 29, a demodulation unit 28, and a signal processing unit 30 through control signal lines, respectively. The control signal is also transmitted to the alarm device 31 and the indicator lamp 32. Connected by line. When the operation switch 21 ′ is pressed and turned on, an ON command signal is transmitted from the operation switch 21 ′ to the control circuit unit 25, and the control circuit unit 25 starts an operation for executing software. Subsequently, when an emergency signal transmitted from the control circuit unit 25 is transmitted to the modulation unit 26, the signal is modulated into an RF signal (carrier wave) that can be transmitted by the modulation unit 26, and then the RF transmission unit 27 and the antenna sharing unit 24. 'Is transmitted from the antenna 24 via'.

  On the other hand, when the alarm receiving panel 5 receives the RF signal, it transmits a response signal notifying that it has been received as will be described later. This response signal, which is the RF signal, is received by the antenna 24 on the alarm transmitter 2 side, When the received RF signal is supplied to the RF receiving unit 29 via the antenna sharing unit 24 ′, the RF receiving unit 29 amplifies it, and the demodulating unit 28 demodulates the response signal, which is an RF signal, into a baseband signal. To the control circuit unit 25. In this state, the control circuit unit 25 instructs the signal processing unit 30 through a control signal line so that a call can be made, and a call can be made between the alarm receiver 5 through the speaker 22 and the microphone 23. . The modulation unit 26, the RF transmission unit 27, the demodulation unit 28, the RF reception unit 29, and the signal processing unit 30 receive a command signal from the control circuit unit 25, for example, in the modulation unit 26, the control circuit unit 25. A command is issued to modulate the signal transmitted from the control unit 26. When the signal is modulated by the modulation unit 26, the modulation is fed back to the control circuit unit 25 and confirmed. Further, for example, when a command to enable a call is issued to the signal processing unit 30 and the signal processing unit 30 becomes ready for a call, the control circuit unit 25 is fed back to the fact that the call is possible. In this state, when a sound (object sound, conversation, noise, etc.) is generated around the alarm transmitter 2, the sound is sent to the modulation unit 26 through the microphone as a voice signal, modulated into an RF signal, and sent to the RF transmission unit 27. And is transmitted as a carrier wave from the antenna sharing unit 24 ′ and the antenna 24. However, when the alarm transmitter 2 cannot receive a response signal within a preset time, an RF signal that is an emergency signal is repeatedly transmitted from the antenna 24.

  As shown in FIG. 1, the alarm receiving board 5 has a substantially rectangular box shape when viewed from the front, and a horizontally long liquid crystal display section 51 is provided on the upper part, and a plurality (four in this case) are provided on the lower part. Operation buttons 52 are arranged in order, and a call microphone 53 is provided on the right side thereof. In addition, a call speaker 54 is provided on the left side and an emergency indicator lamp 55 is provided slightly on the right side in the middle of the alarm receiving panel 5 in the vertical direction. Further, a rod-shaped antenna 56 is projected upward from the left end of the top.

  This alarm receiving board 5 is premised on the use of the school broadcasting system 9 that is preliminarily installed in the school, and is connected to the school broadcasting system 9. In addition, since a general telephone line is used for external notification, the telephone line is connected to the modular jack 10 of the telephone line. Further, it is also connected to an alarm sound generator (school speaker, etc.) 11.

  As shown in FIG. 3, the alarm receiving board 5 has a built-in control circuit unit 61 constituted by a microcomputer. The control circuit unit 61 includes a modulation unit 62, an RF transmission unit 64, a demodulation unit 63, and an RF reception. The unit 65 and the signal processing unit 66 are connected to each other. The antenna 56 is connected to the antenna sharing unit 56 ′, and the modulation unit 62 and the demodulation unit 63 are connected to a signal processing unit 66 including a low frequency amplifier, an echo canceller, a mute control circuit, and the like. A speaker 54 and a microphone 53 are connected to 66. An RF transmitter 64 is connected to one of the antenna sharing units 56 ′, and an RF receiver 65 is connected to the other. The RF transmitter 64 has a modulator 62, and the RF receiver 65 has a demodulator 63. Each is connected. Further, the signal processing unit 66 is connected to the school broadcasting system 9. In addition, as a power source for operating the control circuit unit 61 of the alarm receiving panel 5 and the circuit units 63 to 66, an AC 100V external power source 67 is used after being converted into a direct current. The alarm receiving panel 5 includes an NCU (automatic telephone exchange unit) 70, which is connected to the external telephone line 11 'via a telephone line.

  As shown in FIG. 3, in the alarm receiving panel 5, the registration / operation switch 52 'corresponding to the plurality of operation buttons 52 and the control circuit unit 61 are connected by a control signal line (dotted line display). The control circuit unit 61 is connected to the modulation unit 62, the demodulation unit 63, the RF transmission unit 64, the RF reception unit 65, and the signal processing unit 66 through control signal lines. The control circuit unit 61 is also connected to the LCD display unit 51 ′ of the liquid crystal display unit 51, the LED display unit 55 ′ of the emergency indicator lamp 55, the school broadcasting system 9, and the NCU 70 through control signal lines. Up to this point, it is a bidirectional control signal line, and thereafter is a unidirectional control signal line from the control circuit unit 61. That is, the control circuit unit 61 is connected to the alarm device (external speaker) 68, the voice synthesizer 69, and the dialer 71 through a unidirectional control signal line, and the dialer 71 is connected through a unidirectional control signal line toward the NCU 70. Has been.

  The alarm receiver 5 transmits a response signal, which is an RF signal, to the alarm transmitter 2 and then generates an alarm sound for a predetermined time by the alarm device 68 according to a command from the control circuit unit 61. Blinks and displays the alarm location (location of the alarm transmitter 2 where the emergency push button 21 is pressed) on the liquid crystal display unit 51. Also, a command is issued from the control circuit unit 61, the telephone number of the first priority report destination registered in advance by the dialer 71 is dialed, and a call is made through the telephone line via the NCU 70. At this time, when the first priority report destination arrives, a message created and stored in advance flows to notify the other party of the occurrence of an emergency. When the first priority report destination does not receive a call, the second priority report destination is notified, and when the second priority report destination does not receive, the third priority report destination is notified. This is repeated thereafter. And in this example, it is set to stop the notification if any one of the registered notification destinations is received, but the telephone notification is repeated until a plurality or all of the notification destinations are received. It can also be set.

  Simultaneously with the start of the automatic notification operation by the control circuit unit 61, the school broadcasting system 9 is automatically connected to start school broadcasting, and a message prepared in advance is broadcast to the school. Information such as the classroom where the alarm is located can be added to the message and broadcast. By the way, when a call from the alarm transmitter 2 is started while the message is being broadcast, even if the message is halfway, the broadcast is stopped, and the content of the call from the alarm transmitter 2 is broadcast. Also, the content of the broadcast call can be heard from the speaker 54 of the alarm receiving board 5.

  Further, in this state, when the call response button among the plurality of operation buttons 52 of the alarm receiving panel 5 is pressed and the call response switch 52 'is turned ON, an ON signal is sent to the control circuit unit 61, and the control circuit When the signal processing unit 66 is instructed to enable a call and the signal processing unit 66 enters a call-ready state, the control circuit unit 61 is fed back that the call is enabled. In this state, it is possible to make a two-way call between the alarm transmitter 2 and the alarm receiver 5 that can make a call. At the same time, the control circuit unit 61 issues a command to broadcast the contents of the call to the school broadcasting system 9, and when the school broadcasting system 9 broadcasts the contents of the call, the fact is fed back to the control circuit unit 61. The contents of the call are broadcast on campus. However, if the school broadcasting system 9 cannot start broadcasting due to a failure or the like, the teacher or student in the classroom where the alarm transmitter 2 is installed can immediately confirm that the call contents are not being broadcast by the school broadcasting. Therefore, even if the teacher on the side where the alarm receiving board 5 is installed does not press the call response button 52 (or forgets to press it), the teacher at the alarm place or the student will go to the teacher on the alarm receiving board 5 side, etc. You can make a phone call.

  By the way, at least one alarm transmitter 2 is installed in each classroom, and a plurality of alarm transmitters can be installed in one classroom. Therefore, the emergency push button 21 of one alarm transmitter 2 is pressed, and the emergency push button 21 of another alarm transmitter 2 is pressed during a conversation with the alarm receiver 5. there is a possibility. In such a case, in the school security system 1 of this example, the call (possible state) with the alarm transmitter 2 in which the emergency push button 21 was previously pressed is temporarily put on hold, and then the emergency push button 21 Switch so that a call can be made with the alarm transmitter 2 for which is pressed. The next alarm transmitter 2 performs the same operation as that of the alarm transmitter 2 in which the emergency push button 21 was previously pressed, such as broadcasting the contents of the call through the school broadcasting system 9, but the second and subsequent alarm transmitters 2 are performed. Does not generate automatic alerts and alarm sounds through connection to an external telephone line. The emergency push button 21 of another alarm transmitter 2 is rarely pressed in the classroom where the installation location is the same. In this case, there is not much meaning, but this function can be used when multiple outsiders enter different classrooms. Is valid.

  Although one embodiment of the in-school security system according to the invention has been described above, this security system can be implemented as follows. Although the security system of the present invention can be used in schools, business establishments, factories, and the like, it is assumed that the security system is used in facilities and places where regular training can be performed on a daily basis. In other words, in the case of schools, students and faculty and staff train together to learn how to use this security system when illegal intruders enter the classroom from the outside. Training on how to deal with people and how to evacuate outside in other classrooms. In addition, the alarm transmitter 2 and the alarm receiver 5 regularly transmit and receive the automatic notification system, and the automatic notification system is automatically notified to the notification destination registered for training. A check is made. Specifically, the presence or absence of an abnormality can be detected by automatically communicating regularly between the alarm transmitter 2 and the alarm receiver 5. In addition, even if a confirmation signal is transmitted from the alarm transmitter 2, if the response signal from the alarm receiver 5 cannot be received, it is determined that the alarm receiver 5 is abnormal, and the indicator 32 of the alarm transmitter 2 is notified accordingly. It can be notified by flashing. On the other hand, when the confirmation signal from the alarm transmitter 2 cannot be received by the alarm receiver 5, it is determined that the alarm transmitter 2 is abnormal and the fact is displayed on the liquid crystal display unit 51 together with the number of the alarm transmitter 2. You can also It can also be applied as a security system in a facility where a large number of people gather in an independent room other than a school, such as a business office, factory or laboratory. In this case, the alarm transmitter 2 is installed in each department or laboratory, and the alarm receiver 5 is usually installed in an alarm notification destination such as a security room or an administrator room. Since it is assumed that training is possible as described above, it is not suitable for security in facilities and places where a large number of untrained ordinary people gather, such as department stores, supermarkets, and stations.

  Furthermore, when an automatic notification device receives an incoming call in response to a command from the alarm receiver 5, the fact is displayed on the alarm transmitter 2 and the alarm receiver 5, or an emergency push button 21 of the alarm transmitter 2 at this time. When is pressed, it is possible to make a call with the automatic report destination or to broadcast the contents of the call by the school broadcasting system 9. Further, when the report destination response button is pressed among the plurality of operation buttons 52 of the alarm receiving panel 5, a call with the automatic report destination is enabled, and the contents of the call are broadcast by the in-school broadcasting system 9. You can also.

It is explanatory drawing which shows the alarm transmitter 2 and the alarm receiving board 5 which are used with the school security system 1 which concerns on the Example of this invention. It is a block diagram which shows the structure of one Example of the alarm transmitter 2 used with the school security system 1 of FIG. It is a block diagram which shows the structure of one Example of the alarm receiver 5 used with the school security system 1 of FIG.

Explanation of symbols

1 School Security System 2 Wireless Alarm Transmitter 5 Wireless Alarm Receiver 9 School Broadcast System 10 Modular Jack 11 Alarm Sound Generator (School Speaker)
11 'external telephone line 21 emergency push button 21' operation switch 22 speaker for call 23 microphone for call 24 antenna 24 'antenna shared part 25 control circuit part (microcomputer)
26 Modulating unit 27 RF transmitting unit 28 Demodulating unit 29 RF receiving unit 30 Signal processing unit 33 Rechargeable battery 51 Liquid crystal display unit 51 ′ LCD display unit 52 Operation button 53 Talking microphone 54 Talking speaker 55 Emergency indicator 55 ′ LED display Department '
56 Antenna 56 'Antenna shared part 61 Control circuit part (microcomputer)
62 Modulator 63 Demodulator 64 RF Transmitter 65 RF Receiver 66 Signal Processor 67 AC 100V External Power Supply 68 Alarm Sound Generator (External Speaker)
69 Voice Synthesizer 70 NCU (Automatic Telephone Exchange Unit)
71 Dialer

Claims (7)

A security system used in schools / business establishments equipped with an internal broadcasting system,
Connected to this alarm receiver, a wireless alarm transmitter that is always installed in multiple classrooms or departments, and a wireless alarm receiver that is installed in a contact reporting room such as a faculty / staff room, a security room, or a manager's room, An automatic notification device that sends a call to a pre-registered notification destination by a response signal from the alarm reception panel that has received an emergency signal from the alarm transmitter, and notifies a pre-stored message when the notification destination arrives Prepared,
The alarm transmitter is provided with an emergency push button that, when pressed, transmits an emergency signal for a certain period of time, and when the emergency push button is pressed, it switches from a standby state to a reception state, and the alarm receiver receives an emergency signal. Built-in transmission / reception function that switches to a call-ready state when received,
When receiving an emergency signal from the alarm transmitter, the alarm receiver automatically transmits a response signal to the alarm transmitter, generates an alarm for a certain period of time, and identifies the alarm source by the alarm transmitter. Display or report, and automatically connected to the internal broadcasting system, and configured to broadcast a message stored in advance ,
Further, when a call is started from the alarm transmitter, the call content is broadcast in preference to the message by the internal broadcasting system, and the call voice is also flowed to the alarm receiving board at the same time. Security system. The alarm receiving board is provided with a call response button that enables two-way communication with the alarm transmitter, and at the same time when the call response button is pressed, the content of the call is internally broadcast through the internal broadcasting system. The security system according to claim 1 . A number of notification destinations of the automatic notification device are registered in priority order, and when the notification destination notified in priority order does not receive a call, it is redialed. The security system according to claim 1 or 2 , wherein it is possible to selectively set whether to continue until an incoming call first . When an incoming call is received at the automatic notification destination, the fact is displayed on the alarm transmitter and the alarm receiving panel, and at this time, pressing the emergency push button of the alarm transmitter enables a call with the automatic notification destination. The call content is broadcast by the internal broadcasting system,
Pressing the report destination for response button of the alarm receiver board enables call with the automatic report destination, any one of claims 1 to 3 in which the call content is to be broadcast by the internal broadcasting system 1 Security system described in one . A plurality of the alarm transmitters can be installed in each classroom or each department, and when an emergency push button of another alarm transmitter is pressed in a state where communication with one alarm transmitter is possible, the alarm reception is performed. The call-enabled state between the panel and the previous alarm transmitter is temporarily held and the call can be made between the other alarm transmitters, but the automatic notification by the automatic notification device and the alarm reception panel The security system according to any one of claims 1 to 4, wherein an alarm is not performed. The security system according to any one of claims 1 to 5, wherein the alarm transmitter is installed on an inner wall surface of a classroom or a department, but can be permanently installed in a state of being removed from the inner wall surface. Periodic automatic communication between the alarm transmitter and the alarm receiver can detect the presence or absence of abnormality, and even if a confirmation signal is transmitted from the alarm transmitter, a response signal is received from the alarm receiver When it is not possible, a warning lamp is displayed to indicate that the alarm receiver is abnormal. On the other hand, if the confirmation signal from the alarm transmitter cannot be received by the alarm receiver, the alarm transmitter number indicates that the alarm transmitter is abnormal. The security system according to any one of claims 1 to 6, wherein the security system is displayed together with the security system.

Images